<?php  //$Id:$

///////////////////////////////////////////////////////////////////////////
//																	   //
// NOTICE OF COPYRIGHT												   //
//																	   //
// Moodle - Modular Object-Oriented Dynamic Learning Environment		 //
//		  http://moodle.com											//
//																	   //
// Copyright (C) 1999 onwards  Martin Dougiamas  http://moodle.com	   //
//																	   //
// This program is free software; you can redistribute it and/or modify  //
// it under the terms of the GNU General Public License as published by  //
// the Free Software Foundation; either version 2 of the License, or	 //
// (at your option) any later version.								   //
//																	   //
// This program is distributed in the hope that it will be useful,	   //
// but WITHOUT ANY WARRANTY; without even the implied warranty of		//
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the		 //
// GNU General Public License for more details:						  //
//																	   //
//		  http://www.gnu.org/copyleft/gpl.html						 //
//																	   //
///////////////////////////////////////////////////////////////////////////

require_once('../../config.php');
require_once('key_form.php');

/// get url variables
$courseid = optional_param('courseid', 0, PARAM_INT);
$id	   = optional_param('id', 0, PARAM_INT);
$delete   = optional_param('delete', 0, PARAM_BOOL);
$confirm  = optional_param('confirm', 0, PARAM_BOOL);

if ($id) {
	if (!$key = get_record('user_private_key', 'id', $id)) {
		error('Group ID was incorrect');
	}
	if (empty($courseid)) {
		$courseid = $key->instance;

	} else if ($courseid != $key->instance) {
		error('Course ID was incorrect');
	}

	if (!$course = get_record('course', 'id', $courseid)) {
		error('Course ID was incorrect');
	}

} else {
	if (!$course = get_record('course', 'id', $courseid)) {
		error('Course ID was incorrect');
	}
	$key = new object();
}

$key->courseid = $course->id;

require_login($course);
$context = get_context_instance(CONTEXT_COURSE, $course->id);
require_capability('moodle/grade:export', $context);

// extra security check
if (!empty($key->userid) and $USER->id != $key->userid) {
	error('You are not owner of this key');
}

$returnurl = $CFG->wwwroot.'/grade/export/keymanager.php?id='.$course->id;

if ($id and $delete) {
	if (!$confirm) {
		print_header(get_string('deleteselectedkey'), get_string('deleteselectedkey'));
		$optionsyes = array('id'=>$id, 'delete'=>1, 'courseid'=>$courseid, 'sesskey'=>sesskey(), 'confirm'=>1);
		$optionsno  = array('id'=>$courseid);
		notice_yesno(get_string('deletekeyconfirm', 'userkey', $key->value), 'key.php', 'keymanager.php', $optionsyes, $optionsno, 'get', 'get');
		print_footer();
		die;

	} else if (confirm_sesskey()){
		delete_records('user_private_key', 'id', $id);
		redirect('keymanager.php?id='.$course->id);
	}
}

/// First create the form
$editform = new key_form();
$editform->set_data($key);

if ($editform->is_cancelled()) {
	redirect($returnurl);

} elseif ($data = $editform->get_data()) {

	if ($data->id) {
		$record = new object();
		$record->id			= $data->id;
		$record->iprestriction = $data->iprestriction;
		$record->validuntil	= $data->validuntil;
		update_record('user_private_key', $record);
	} else {
		create_user_key('grade/export', $USER->id, $course->id, $data->iprestriction, $data->validuntil);
	}

	redirect($returnurl);
}

$strkeys   = get_string('userkeys', 'userkey');
$strgrades = get_string('grades');

if ($id) {
	$strheading = get_string('edituserkey', 'userkey');
} else {
	$strheading = get_string('createuserkey', 'userkey');
}


$navlinks = array(array('name'=>$strgrades, 'link'=>$CFG->wwwroot.'/grade/index.php?id='.$courseid, 'type'=>'misc'),
				  array('name'=>$strkeys, 'link'=>$CFG->wwwroot.'/grade/export/keymanager.php?id='.$courseid, 'type'=>'misc'),
				  array('name'=>$strheading, 'link'=>'', 'type'=>'misc'));
$navigation = build_navigation($navlinks);

/// Print header
print_header_simple($strkeys, ': '.$strkeys, $navigation, '', '', true, '', navmenu($course));

$editform->display();
print_footer($course);
?>
